MIL-PRF-12732F
valve. The water meter shall be connected to the hypochlorinator in such a manner that the
hypochlorinator will pump hypochlorite solution into the water under treatment at a rate which is
governed by the speed of the meter. The water meter shall be provided with a 1/4-inch NPT
opening in its lower chamber to permit draining. A bronze shutoff cock shall be installed in the
meter drain opening.
3.10 Sight assembly. When specified (see 6.2), a methacrylate plastic sight assembly
shall be provided in the hose connection between the reservoir and hypo-chlorinator for visual
checking of the hypochlorite solution during operation of the hypochlorinator. The methacrylate
plastic material shall conform to L-P-380, type I, class 1.
3.11 Chlorine photometer and test strips. When specified (see 6.2), a Chlorine
Photometer (NSN 6850-01-487-8812) and Chlorine Test Strips (NSN 6640-01-490-7587), for
the determination of residual chlorine, shall be furnished.
3.12 Strainer. A removable, chemically resistant, plastic strainer shall be attached to the
reservoir end of the connection between the hypochlorite solution reservoir and the automatic
hypochlorinator. The strainer shall have a plastic frame covered with polypropylene chloride
screening, 1024 openings per square inch, diameter of filament 0.012±0.002 inch.
3.13 Frame. The entire unit shall be mounted in a frame fabricated from aluminum
tubing conforming to ASTM B 210 or B 221, Alloy 6061, Temper T4 or T6, 1-1/4-inch OD and
0.125-inch wall thickness, or 3/4-inch nominal pipe size (NPS) steel pipe conforming to
ASTM A53/53M, standard weight, black.
3.14 Dimensions and weight. The unit shall be not more than 31 inches high, 30 inches
wide with reservoir in place, and 33 inches long. The maximum net weight of the unit shall be
not more than 235 pounds.
3.15 Cover. Unless otherwise specified (see 6.2), a cloth cover made of material
conforming to A-A-55308, type I, class 1 shall be furnished to cover the framed unit. The thread
used in the fabrication of the cover shall conform to MIL-DTL-32072 type I, class 1, subclass B,
Tex size 210. The color of the cloth and thread shall closely match Tan 686A, Color #33446,
from FED-STD-595.
3.16 Identification marking. The unit shall be identified in accordance with
MIL-STD-130. The marking shall be applied to plates conforming to A-A-50271, composition
C. Plates shall be attached by screws, bolts, rivets, or adhesive conforming to MMM-A-16l7,
type II or III, in a conspicuous protected location.
3.17 Instruction plates.
3.17.1 Hypochlorination unit. Each unit shall be equipped with instruction plates or
diagrams, including warnings and cautions, describing any special or important procedures to be
followed in assembling, operating, or servicing the hypochlorinator. Instruction plates shall
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